ASTROSAT CZTI

Data Quality Report

Orbit 09955

Creation date: 2024-06-27T15:52:53.615197
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G07_016T01_9000001420_09955cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09955cztM0_level2_quad_clean.evt
Size (bytes)510,284,16089,974,080
Size486.6 MB 85.8 MB
Events in quadrant A3,099,454584,013
Events in quadrant B3,551,737585,328
Events in quadrant C2,868,353577,191
Events in quadrant D5,498,702529,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136122
B0149801
C0131301
D0207051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6428540.840075%
B6428931.446795%
C6428340.528936%
D64284056.300560%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7548 6428 0 0 0.00% 0.00%
B 7548 6428 28 28 0.37% 0.44%
C 7548 6428 1 1 0.01% 0.02%
D 7548 6428 424 424 5.62% 6.60%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 254 65745 412.38 768 750 157.6
A 13 14 31954 197.98 768 750 157.6
A 15 174 21441 131.28 768 750 157.6
B 4 239 232520 1587.39 767 750 146.0
B 4 81 159735 1088.89 767 750 146.0
B 0 214 42790 287.93 767 750 146.0
C 14 234 6036 31.07 732 736 170.6
C 13 61 5522 28.06 732 736 170.6
C 14 67 3693 17.34 732 736 170.6
D 12 233 914472 4723.69 715 697 193.4
D 8 195 726852 3753.8 715 697 193.4
D 10 253 316776 1633.95 715 697 193.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter